Also Wednesday, the Rockets reached an agreement to send forward Marcus Morris to Phoenix for a future second-round pick, according to a person with knowledge of the deal. The person spoke on condition of anonymity because that trade had not been announced, pending league approval.

Patterson, Aldrich and Douglas walked out of the Toyota Center just as Houston was starting its game against Oklahoma City, on the eve of the trading deadline.

The 6-foot-9 Patterson had started 38 games for Houston this season and was the Rockets' fourth-leading scorer, averaging 11.6 points. Douglas was acquired in the offseason in a trade with New York and he played in 49 games backing up Jeremy Lin. The 6-11 Aldrich, acquired in the James Harden trade with Oklahoma City just before the season, averaged 1.7 points in 30 games for Houston this season.

Sacramento had high hopes for the 6-10 Robinson, but he's disappointed so far, averaging only 4.8 points and 4.7 rebounds in 16 minutes per game. His most notable NBA moment might have come when he elbowed Detroit's Jonas Jerebko in the neck during a game in November. Robinson was ejected and suspended two games by the NBA.